Interrupts - Intel SE440BX - Desktop Board Motherboard Product Manual

Interrupts

Table 39.

Interrupts

IRQ System Resource
NMI I/O channel check
0 Reserved, interval timer
1 Reserved, keyboard buffer full
2 Reserved, cascade interrupt from slave PIC
3 COM2*
4 COM1*
5 LPT2 (Plug and Play option)/audio/user available
6 Diskette drive controller
7 LPT1*
8 Real time clock
9 Reserved
10 USB/User available
11 Windows Sound System*/user available
12 Onboard mouse port (if present, else user available)
13 Reserved, math coprocessor
14 Primary IDE (if present, else user available)
15 Secondary IDE (if present, else user available)
Default, but can be changed to another IRQ
SE440BX-2 Motherboard Product Guide
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